'''
Copyright 2011 Jake Ross

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

   http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
'''
#============= enthought library imports =======================
#from traits.api import HasTraits
#from traitsui.api import View,Item,Group,HGroup,VGroup

#============= standard library imports ========================
import time
from monitor import Monitor
#from threading import Thread
#============= local library imports  ==========================

cnt = 0
class PumpingMonitor(Monitor):
    '''
        G{classtree}
    '''
    gauge_manager = None
    tank_gauge_name = 'gauge1'
    pump_gauge_name = 'gauge2'
    #pumping_duration=Float
    #idle_duration=Float
    name = 'AnalyticalPumpingMonitor'


    def _monitor_(self):
        '''
        '''
        pump_start = 0
        idle_start = 0

        def get_time(_start_):
            ct = time.time()
            _dur_ = 0
            if _start_ == 0:
                _start_ = ct
            else:
                _dur_ = ct - _start_
            return _start_, _dur_

        while self.gauge_manager is not None:
            state = self._get_pumping_state()

            if state == 'pumping':
                idle_start = 0
                pump_start, pump_duration = get_time(pump_start)
                self.parent.update_pumping_duration(self.name, pump_duration)
            else: #state=='idle'
                pump_start = 0
                idle_start, idle_duration = get_time(idle_start)
                #print 'idle duir',idle_duration
                self.parent.update_idle_duration(self.name, idle_duration)

            time.sleep(1)
    def _get_pumping_state(self):
        '''
        '''
        state = 'idle'
        #gm=self.gauge_manager
        global cnt

        if cnt >= 5 and cnt < 10:
            state = 'pumping'

#        tankgauge=gm.get_gauge_by_name(self.tank_gauge_name)
#        if tankgauge.pressure<1:
#            state='pumping'

        cnt += 1
        return state
#============= EOF ====================================
